I would put them In the grill,back window and try to put some between the tailgate and bumper. As for the tail lights I have the Whelen hide away led's in my tail lights and Vertex in my fog lights, very bright and effictive... If you want to do something in your taillights/reverse lights look at Whelen vertex like 120 for a set wher I live.

NJFF5860 what do you run for a siren?

 

I know this thread is old, but here's my stobes. Mine are just for fun and I NEVER use them on the road, as much as I'd like to sometimes. Second vid is a small LED lightbar that's also just for fun. I ended up putting it up in my windshield.
http://www.youtube.com/watch?v=z1C4MRRZv24

http://www.youtube.com/watch?v=2nqiA1bydfA

And another "just for fun". BTW, I'm a deputy in Idaho and everything I've done is legal as long as I don't go on the roadway with this stuff on. The lightbar is one of our REALLY old one's that our shop was going to throw away. I said no and took it.
http://www.youtube.com/watch?v=1UgBPm3tDLI